Improvement in school-desk



JOHN F. rinunce nrcHMeND, Iitnllgum;y

Letters Patent Nm-106,403, dated August 16, 1870.

IMPRQVEMENT 1N 'scHooL-DESK.

The' Schedule referred to in these Letters Patent and ma'king peut of the same I, Jol-1N 11. PIEHL, ot thecity of' Richmond,county of Wayne and State of Indiana, have invented certain Improvements in School-Desks, of which the following isa specification.

Nature and Object of the I iwcution.

My invention consists .in.providiug a school-desk and seat with a clamp-hinge, or a hinge provided with 'a clamp, so that the clamp may be screwed tight against4 the hinge, for the purpose of' holding the desk morefirmly, and to produce a more permanent hinge. A

' Description of thcAccompanying Drawing. Figurefl is a transverse vertical section of my desk, shown asit appears wl/reir eut off close to' the endpiece of, the desk. .1' V Figure 2 is also a transverse vertical section of' my desk cut in two in-.the middle, and viewed from the tiont,.showiuga brace.

General Description. l The sume letters refer tri-corresponding parts in the several figures.

A is theend upright, of' -which there, are two'. Y 151s the hack board, secured to the upright A by means of enrs 1.

, (his oueof 'the end pieces of the desk, of which there ure two.

I) is t-he top of' `the desk.

E is the bottom of the desk.

F is the scat. l (lr is a clamp, of which there are foul, two only be ing represented. l

1I, jam mits.

l, 'pins on which the desk .and seat vibrate.

1i, lugs'eaeh side ot' the end of the clamp G.

L is a brace, there being one aty each end of the desk, at the bottom of the back board, and secured t0 the uprights A. A

M is a piece to which the seat is secured at each end, and through which there is a hole toreceive the pin I, and on which it vibrates.

Q, joints.

N is the back board ot the desk.

O is a' pin ou which the clamp Gis slipped, one

ldesk requiring four of' those pins 0.

P shows one of the ears t0 which the back board is secured, there being six, onlyone is shown.

The uprights A, and also the end pieces C oi' the desk, are made ot' cast iron, or anyother suitable metal, as alsok the clamps, .joiut-pins, nuts, and braces; the wood-work is best made of one-inch ash lumber.

The end of the hack board B should butt up against the upright A, and be secured bymeans of the ears P, which are on the back of the upright A.

I am aware of the patents of A. E. Roberts, dated January 11, 1870, and D. H. Nation, May 18, 1869, and the devices therein found I do not wish to claim; but

What I do claim as my improvement in .school-desks, and desire to secure by Letters Patent, is-

1. In combination with the standards A A, and

, pieces M, or pieces C, the pins I and O, clamps G, v

jam-nuts H, and lugs K, forming the joints Q,allcon structed and arranged as herein described.

2. In combination with a schoolrlesk constructed as herein described, theears P, and braces L, for the purpose specified.

JOHN F, $15 HEEL.

mar-lr.

VVitucsses:

WM. 4E. BELL, JOHN CALVERT. 

